Wind turbine tower

Abstract

Wind turbine tower (1), characterized in that it comprises the following: a tower (1) at one end of which a base (2) is attached, wherein an access door (3) is provided on the tower (1); a winged wheel (4) attached to an end of the tower (1) furthest from the base (2); and a balancing unit attached to the tower (1), the balancing unit comprising a steering unit and an extension unit, the steering unit being attached to the outside of the tower (1), wherein in the operating state of the steering unit the steering unit rotates in the center of the tower (1) to cope with different wind directions, the extension unit being connected to the steering unit and in the operating state of the extension unit the extension unit driving the counterweight block in a horizontal direction.

Description

Technical area

[0001] The utility model relates to the technical field of wind energy generation, in particular a wind turbine tower. State of the art

[0002] Wind turbine is a device that converts wind energy into electricity, wind energy is the most mature technology in the field of clean energy, the large-scale development of new renewable energy, wind turbines are mainly composed of impellers, towers and bases of three parts, the rest of the accessories for power generation are installed in the impeller, tower and base.

[0003] According to a search, Chinese Patent Publication No. CN219911032U discloses a wind turbine tower with good stability, comprising a base, a tower unit movably provided at an upper end of the base, and a drive mechanism provided within the base, with a counterweight mechanism provided at the upper end of the tower unit. The utility model has a simple structure and a reasonable design. The counterweight mechanism adjusts the center of gravity of the entire tower under different wind speeds to prevent the center of gravity of the entire device from being shifted toward the impeller when the wind speed is too low. Due to the counterweight mechanism, the entire tower is subjected to excessive wind resistance under the action of the impeller at different wind speeds, and the overall center of gravity is shifted away from the impeller side of the casing.thereby increasing the overall stability of the tower and improving the service life of the tower. At the same time, the tower unit increases the number of connection points between the tower body and the lower mounting platform, and the stabilizing rod is tilted between the inner side wall of the tower body and the lower mounting platform, which can further balance the center of gravity of the tower and increase the stability of the tower.

[0004] However, in the above technical solution, the stability of the tower is only increased by the rotation of the counterweight block around the tower, but the counterweight block has a certain area, and if the counterweight block at the top of the tower faces the wind, it will further increase the wind resistance of the tower and increase the load of the tower. Content of the utility model

[0005] The purpose of the utility model is to propose a wind turbine tower as an answer to a problem of the background technology.

[0006] Technical solution of the utility model: Wind turbine tower comprising: a tower having a base attached to one end thereof, the tower having an access door; an impeller attached to an end of the tower remote from the base; a balancing unit attached to the tower, the balancing unit comprising a steering unit and an extension unit, the steering unit being attached to the outside of the tower, wherein, in the use state of the steering unit, the steering unit rotates in the center of the tower to cope with different wind directions, the extension unit is connected to the steering unit, and in the use state of the extension unit, the extension unit drives the counterweight block in the horizontal direction.

[0007] Preferably, the steering unit comprises: a support disc rotatably mounted on the tower; a gear ring having the same circle center as the support disc, the gear ring being mounted on the support disc; a first drive unit having an output shaft mounted on its output end, the first drive unit being connected to a mounting plate, and a support plate being connected to the tower.

[0008] Preferably, the expansion unit comprises the following: a support plate, the number of which is symmetrically two, the support plate being connected to the support disc; a fastening seat fixed to both ends of the support plate; threaded rods, the number of which corresponds to the support plate, the two ends of the threaded rods being rotatably connected to the fastening seat; a second drive unit, the number of which corresponds to the threaded rod, wherein the second drive unit is fixed to the mounting seat in both directions, wherein the output end of the second drive unit is connected to one end of the threaded rod; a sliding seat screwed onto a reciprocating threaded rod, wherein a connecting plate is fixed between the sliding seats, wherein the counterweight block is fixed to the connecting plate.

[0009] Preferably, a protective cover is provided on the outside of the second drive unit, which is fastened to the fastening seat.

[0010] Preferably, several evenly distributed ventilation holes are provided on the tower, with a sealing frame being mounted inside the ventilation holes.

[0011] Preferably, sound-absorbing cotton wool is attached to both walls of the sealing frame.

[0012] Compared to the state of the art, the technical solution of the utility model described above has the following advantageous technical effects: In this utility model, the steering unit rotates with the central axis of the tower as the center of the circle in use, and both the steering unit and the impeller can be controlled to achieve better use effect, and in use, the extension unit can move the counterweight block horizontally, thus increasing the distance between the counterweight block and the tower to achieve a larger moment and thus increase stability. Short descriptions of the drawings Fig. 1 Three-dimensional view of the utility model; Fig. 2 Schematic sectional view of Fig. 1; Fig. 3 Enlarged view of the structure of A in Fig. 2; Fig. 4 Enlarged view of the structure of B in Fig. 2; Fig. 5 Schematic representation of a sectional view of a gear ring.

[0013] List of reference symbols: 1-Tower; 2-Base; 3-Access door; 4-Impeller; 5-Support disc; 6-Tooth ring; 7-First drive unit; 8-Output shaft; 9-Mounting plate; 10-Gear; 11-Support plate; 12-Fixing seat; 13-Threaded rod; 14-Second drive unit; 15-Sliding seat; 16-Connecting plate; 17-Protective cover; 18-Ventilation hole; 19-Sealing frame; 20-Sound-absorbing cotton. Concrete embodimentExemplary embodiment I

[0014] As in Fig. As shown in Figures 1 to 5, the utility model provides a wind turbine tower comprising a tower 1, a base 2, an access door 3, an impeller 4, and a balancing unit. The base of the tower 1 is connected to the base 2, and the impeller 4 is attached to the top of the tower 1. A wind speed and direction sensor is mounted on the top of the impeller 4. A recess is provided on a side wall of the tower 1 and is hinged to the access door 3. A balancing unit comprising a steering unit and an extension unit is attached to an outer side wall of the tower 1. The steering unit is attached to the outer side wall of the tower 1, and the extension unit is attached to the steering unit. The steering unit rotates around the central axis of the tower 1 during operation, and both the steering unit and the impeller 4 can be steered to achieve better results.the extension unit is connected to the steering unit, and the extension unit is capable of moving the counterweight block in the horizontal direction in the deployed state, thereby increasing the distance between the counterweight block and the tower 1 to obtain a larger moment and improve its stability.;

[0015] In an optional embodiment, the tower 1 is provided with a plurality of evenly spaced ventilation holes 18, wherein a sealing frame 19 is mounted within the ventilation holes 18; the ventilation holes 18 are capable of reducing wind resistance on the surface of the tower 1 and increasing stability.

[0016] In an optional embodiment, sound-absorbing wadding 20 is attached to both walls of the sealing frame 19; the sound-absorbing wadding 20 absorbs noise caused by wind blowing through the ventilation holes 18. Example II

[0017] As in Fig. 2, Fig. 3 and Fig. 5, the utility model offers a wind turbine tower. In comparison to Example 1, a detailed structure of the steering unit is documented in this embodiment. The steering unit comprises a support disk 5, a gear ring 6, a first drive unit 7, an output shaft 8, a mounting plate 9, a gear 10 and a support plate 11. The support disk 5 is rotatably connected to the outer side wall of the tower 1 by means of a bearing. The upper end face of the support disk 5 serves for connection to the extension unit, and the lower end face of the support disk 5 serves for connection to the gear ring 6. The mounting plate 9 is fastened to the outer wall of the tower 1 and the first drive unit 7 is fastened to the mounting plate 9. The first drive unit 7 is selected from an electric motor.wherein the output end of the first drive unit 7 is connected to an output shaft 8, wherein the output shaft 8 serves to connect a gear 10, wherein the gear 10 is connected to the gear ring 6 in a meshing gear; Example III

[0018] As in Fig.5, the utility model offers a wind turbine tower in which a detailed structure of the extension unit is documented compared to Example II. The extension unit includes a support plate 11, a fixing seat 12, a threaded rod 13, a second drive unit 14, a sliding seat 15, and a connecting plate 16. The two symmetrically arranged support plates 11 are connected to the upper end surface of the support disk 5. Both ends of the support plate 11 are connected to the fixing seat 12. The ends of the threaded rod 13 are rotatably connected to the fixing seat 12 via bearings. The two second drive units 14 are connected to each of the two fixing seats 12. The second drive unit 14 is, but is not limited to, a servo motor connected to one end of the threaded rod 13.Two sliding seats 15 are screwed onto the threaded rods 13, and a connecting plate 16 is connected to the upper end surface of the sliding seats 15; the connecting plate 16 is provided with a recess for receiving a counterweight block.

[0019] In an optional embodiment, the second drive unit 14 is externally covered with a protective cover 17, wherein the protective cover 17 is fastened to the fastening seat 12;The protective cover 17 prevents rain debris from coming into contact with the second drive unit 14 and impairing its heat dissipation capacity. In summary, when using the utility model, the impeller 4 is equipped with wind speed and direction sensors for detecting the direction and speed of the wind, both of which are capable of sending the detected signals to the control device. The first drive unit 7 and the second drive unit 14 are controlled by the control device to operate in strong wind conditions. After starting, the first drive unit 7 drives the gear 10 via its output shaft 8, and the gear 10 engages the gear ring 6 to rotate the support disc 5 so that the counterweight block faces in the same direction as the impeller 4.At the same time, the two threaded rods 13 are rotated by the output ends of the two second drive units 14, the sliding seat 15 on the threaded rods 13 moves linearly along the central axis of the threaded rods 13, and the connecting plate 16 and the counterweight block between the sliding seat 15 move away from the tower 1 to keep the center of gravity of the tower 1 balanced and increase its stability, while further reducing wind resistance through the ventilation holes 18 provided on the tower 1;

[0020] The embodiment of the utility model is described in detail above in conjunction with the accompanying drawings, but the utility model is not limited thereto, and various modifications may be made within the scope of the knowledge of technicians in the technical field to which it belongs without departing from the purpose of the utility model. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] CN 219911032U

[0003]

Claims

[1] Wind turbine tower (1), characterized by that it includes: a tower (1) having a base (2) attached to one end thereof, an access door (3) being provided on the tower (1); an impeller (4) mounted at an end of the tower (1) remote from the base (2); and a balancing unit attached to the tower (1), the balancing unit comprising a steering unit and an extension unit, the steering unit being attached to the outside of the tower (1), wherein in the use state of the steering unit the steering unit rotates in the center of the tower (1) to cope with different wind directions, the extension unit being connected to the steering unit, and in the use state of the extension unit the extension unit drives the counterweight block in the horizontal direction. [2] Wind turbine tower (1) according to claim 1, characterized by that it includes: a support disc (5) rotatably mounted on the tower (1); a toothed ring (6) having the same circle center as the support disc (5), the toothed ring (6) being fixed to the support disc (5); a first drive unit (7) to whose output end an output shaft (8) is attached, wherein the first drive unit (7) is connected to a mounting plate (9), and a support plate (11) is connected to the tower (1); and a gear (10) connected to the output shaft (8), the gear (10) and the toothed ring (6) meshing with each other. [3] Wind turbine tower (1) according to claim 2, characterized by that the expansion unit includes: a support plate (11) symmetrically two in number, the support plate (11) being connected to the support disc (5); a mounting seat (12) fixed to both ends of the support plate (11); threaded rods (13) whose number corresponds to the support plate (11), the two ends of the threaded rods (13) being rotatably connected to the fastening seat (12); a second drive unit (14), the number of which corresponds to the threaded rod (13), wherein the second drive unit (14) is fixed to the mounting seat (12) in both directions, the output end of the second drive unit (14) being connected to one end of the threaded rod (13); a sliding seat (15) screwed onto a reciprocating threaded rod (13), a connecting plate (16) being fastened between the sliding seats (15), the counterweight block being fastened to the connecting plate (16). [4] Wind turbine tower (1) according to claim 3, characterized by that a protective cover (17) is provided on the outside of the second drive unit (14), which is fastened to the fastening seat (12). [5] Wind turbine tower (1) according to claim 1, characterized by that several evenly distributed ventilation holes (18) are provided on the tower (1), wherein a sealing frame (19) is mounted inside the ventilation holes (18). [6] Wind turbine tower (1) according to claim 5, characterized by that sound-absorbing wadding (20) is attached to both walls of the sealing frame (19).

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